Fixed normal EXT-6927 (Vertical tabs not attached to tab panel)

- Decreased space between tabs and panel in tab container

Reviewed by Mike Antipov at https://codereview.productengine.com/secondlife/r/297/

--HG--
branch : product-engine

indra/newview/skins/default/xui/en/floater_preferences.xml

@@ -47,7 +47,7 @@
      tab_group="1"
      tab_position="left"
      tab_width="115"
-     tab_padding_right="5"
+     tab_padding_right="0"
      top="21"
      width="658">
         <panel